<template>
  <div>
    <el-form ref="deptForm" :model="form" :rules="rules" label-width="120px">
      <el-form-item label="部门名称" prop="name">
        <el-input v-model="form.name" style="width:80%" placeholder="1-50个字符" />
      </el-form-item>
      <el-form-item label="部门编码" prop="code">
        <el-input v-model="form.code" style="width:80%" placeholder="1-50个字符" />
      </el-form-item>
      <el-form-item label="部门负责人" prop="manager">
        <el-select v-model="form.manager" style="width:80%" placeholder="请选择">
          <el-option
            v-for="item in EmloyeesList"
            :key="item.id"
            :value="item.username"
            :label="item.username"
          />
        </el-select>
      </el-form-item>
      <el-form-item label="部门介绍" prop="introduce">
        <el-input v-model="form.introduce" style="width:80%" placeholder="1-300个字符" type="textarea" :rows="3" />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" size="small" @click="hSubmit">确定</el-button>
        <el-button size="small" @click="$emit('close')">取消</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
import { getEmployeesSimple } from '@/api/employees'
import { addDepartments, getDepartmentsDetail, updateDepartments } from '@/api/departments'
export default {
  props: {
    id: {
      type: String,
      required: true
    },
    isEdit: {
      type: Boolean,
      required: true
    },
    originList: {
      type: Array,
      required: true
    }
  },
  data() {
    const validCode = (rule, value, callback) => {
      // console.log(value, 'value')
      // console.log(this.originList, 'this.originList')
      let existCodeList = this.originList.map(item => item.code)
      // 编辑的状态, 先移除自己的编码
      if (this.isEdit) {
        existCodeList = this.originList.filter(item => item.id !== this.id).map(item => item.code)
      }
      if (existCodeList.includes(value)) {
        // 存在, 提示用户, 该编码已经存在
        callback(new Error(`部门编码: ${value} 已经存在`))
      } else {
        callback()
      }
    }
    const validName = (rule, value, callback) => {
      // 计算公式
      console.log(value, 'value')
      console.log(this.originList, 'this.originList')
      console.log(this.id) // 新增, 那么 this.id 就是父部门的 id, 作为新增部门的 pid
      let exisNameList = this.originList.filter(item => item.pid === this.id).map(item => item.name)

      if (this.isEdit) {
        // 所有的部门数据 originList
        // 在所有的部门
        const curDepartment = this.originList.find(item => item.id === this.id)
        const pid = curDepartment.pid
        // 所有的兄弟部门的 pid 都是一样的, 找所有的兄弟, 包括了自己
        const brothers = this.originList.filter(item => item.pid === pid)
        // 排除自己
        exisNameList = brothers.filter(item => item.id !== this.id).map(item => item.name)
      }
      console.log(exisNameList)
      if (exisNameList.includes(value)) {
        // 存在
        callback(new Error(`部门名称: ${value} 已经存在`))
      } else {
        callback() // 放行
      }
    }
    return {
      form: {
        name: '',
        code: '',
        introudce: '',
        manager: ''
      },
      rules: {
        name: [
          { required: true, message: '请输入部门名称', trigger: 'blur' },
          { min: 1, max: 50, message: '请输入长度是 1 ~ 50 的字符', trigger: 'blur' },
          { validator: validName, trigger: 'blur' }
        ],
        code: [
          { required: true, message: '请输入部门编码', trigger: 'blur' },
          { min: 1, max: 50, message: '请输入长度是 1 ~ 50 的字符', trigger: 'blur' },
          { validator: validCode, trigger: 'blur' }
        ],
        introudce: [
          { required: true, message: '请输入部门介绍', trigger: 'blur' },
          { min: 1, max: 300, message: '请输入长度是 1 ~ 300 的字符', trigger: 'blur' }
        ],
        manager: [
          { required: true, message: '请选择部门负责人', trigger: ['blur', 'change'] }
        ]
      },
      EmloyeesList: [] // 负责人列表
    }
  },
  // 解决数据不更行的方式3, 使用 watch 侦听 id 的变化
  // watch: {
  // 'id': (newVal, oldVal) => {
  //   console.log(newVal, oldVal)
  //   console.log('this', this)
  //   this.loadEmployeesSimple()
  // }

  // 深度侦听的写法
  // 'id': {
  //   handler: function(newVal, oldVal) {
  //     console.log('this', this)
  //     this.loadDepartmentsDetail()
  //   },
  //   deep: true, // 开启深度侦听
  //   immediate: true // 组件一加载, 就执行
  // }
  // },
  created() {
    this.loadEmployeesSimple()
    if (this.isEdit) {
      this.loadDepartmentsDetail()
    }
  },
  methods: {
    resetForm() {
      // 重置表单的校验规则和数据
      this.$ref.deptForm.resetFields()
    },
    // 获取当前部门的数据
    async loadDepartmentsDetail() {
      try {
        const res = await getDepartmentsDetail(this.id)
        console.log(res, 'getDepartmentsDetail')
        this.form = res.data
      } catch (error) {
        console.log(error)
      }
    },
    hSubmit() {
      // 需要完成兜底校验
      // 实现新增子部门
      // this.isEdit ? '编辑操作': '新增操作'
      this.$refs.deptForm.validate(valid => {
        if (!valid) return // 校验失败
        this.isEdit ? this.doEdit() : this.doAdd()
      })
    },
    // 编辑部门
    async doEdit() {
      try {
        const res = await updateDepartments(this.form)
        console.log(res, 'updateDepartments')
        if (res.code !== 10000) return this.$message.error(res.message)
        this.$message.success(res.message)
        // 重新渲染列表数据, 关闭弹层
        // 子传父
        this.$emit('success')
      } catch (error) {
        console.log(error)
      }
    },
    // 新增子部门
    async doAdd() {
      try {
        const res = await addDepartments({ ...this.form, pid: this.id })
        console.log(res)
        if (res.code !== 10000) return this.$message.error(res.message)
        this.$message.success(res.message)
        // 重新渲染列表数据, 关闭弹层
        // 子传父
        this.$emit('success')
      } catch (error) {
        console.log(error)
      }
    },
    // 获取部门负责人数据
    async loadEmployeesSimple() {
      try {
        const res = await getEmployeesSimple()
        console.log(res, 'getEmployeesSimple')
        if (res.code === 10000) {
          this.EmloyeesList = res.data
        }
      } catch (error) {
        console.log('error')
        this.$message.error(error)
      }
    }
  }
}
</script>
